Answer
$1$
Work Step by Step
The given expression.
$=x^9\cdot x^{-9}$
Use the product of powers property.
$=x^{9-9}$
Simplify.
$=x^{0}$
Use definition of negative exponent.
$=1$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 6 - Exponential Functions and Sequences - 6.1 - Properties of Exponents - Monitoring Progress - Page 293: 6
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